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Official data from INPI

SEM TITULO

DeferidaInvention Patent

Application data

Number

PI8305417

Type

Invention Patent

Filing

09/30/1983

Publication

05/15/1984

Progress at the INPI

  1. Filing09/30/83
  2. Publication05/15/84
  3. Examination07/29/86
  4. Allowance10/24/89
  5. Grant05/29/90
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L'Air Liquide, Societe Anonyme Four L'Etude et L'Rxploitation des Procedes georges Claude

FR

Inventors

M. G. (pessoa física)

R. F. (pessoa física)

S. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

10/24/1989

RPI 992

Exigência - art. 36 da LPI

#6.1

05/02/1989

RPI 967

6.2

03/04/1987

RPI 854

Solicitação de exame técnico

#4.1

07/29/1986

RPI 823

Publicação do pedido de patente

#3.1

05/15/1984

RPI 708

Pedido de patente depositado

#2.1

12/13/1983

RPI 686

Carta-patente expirada

#21.1

Patente extinta em 30/09/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

03/01/1990

RPI 1007

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